Anchor.



E. W. JOHNSTON. ANCHOR.

APPLICATION FILED APR.8. 1912.

WITNESSES: mvmron;

ATTORNEY UNITED snares-PA ENT orruon.

ELIAS W. JOHNSTON, 0F SEATTLE, WASHINGTON.

ANCHOR.

Specification of Letters Patent.

Patented Jan. 21, 1913.

Application filed April 8, 1912. Serial No. 689,327:

buoys or for other permanent moorings.

The object of the invention is to provide a simple, strong, andinexpensive anchor capable of penetrating the ground and retaining itshold therein under any required service. This object I attain in theconstruction hereinafter fully described and which is illustrated in theaccompanying drawings, in which Figure 1 is a vertical elevation, partlyin section, of an anchor embodying my invention; and Fig. 2 is anunderside plan' view of the same.

- The reference numeral 5 designates the anchor-shank provided at oneend with an eye through which is passed a pin 6 for securing a shacklelink 7. The other end of the shank is made conical or flaring, as at 8,to lit within a correspondinglyshaped recess provided within theanchor-head 9. This head is of substantially bowl-shape and is serratedabout its periphery to afford substantially triangular flukes 10.Extending downwardly from the convex 0r underside of the head is a hub11 to furnish a greater amount of bearing surface for said shank andalso to provide space for a locking key 12 which is driven intoregistering apertures provided in the shank and the hub.

The anchor head, constituted of the bowl having a notched circumferenceand the hub,

is formed integral and may advantageously be constructed of cast iron.

The anchor-head is constructed to hin e its inner and outer facesconverge from the center portion of the head toward the ends of thefiukes, whereby the same present approximately wedge-shapedprojections.The advantages of this construction will be ap parent inasmuch as ananchor will more readily embed itself in the ground with a 'wedgingaction and thus serve to perform the services of an ordinary shipsanchor 11 Well as holding with the efficiency of the so called mushroomanchors.

What I claim as my invention, is

An anchor comprising a head of concave convex form withradially-extending flukcs, and a hub formed centrally of and projectingbeyond'the convex face of the head, said hub and head having an aperturetherethrough conical throughout its length and the hub having a lateralaperture intersect ing said conical aperture, the lateral aperturehaving a" straight wall and an opposite inclined wall, a shank having anenlarged conical end fitting-in the conical aperture of the head. andhub, and a key extending through theapertures in the hub and through asimilarly shaped aperture in the shank. Signed at Seattle, \Vash, this28th day of March, 1912.

ELIAS V. JOllNS'lt )N'. \Vitnesscs:

Hermon BARNES, E. Inrnnsox.

